<template>
	<view v-if="cart.length !== 0">
		<!-- 购物车商品列表的标题区域 -->
		<view class="cart-title">
			<!-- 左侧的图标 -->
			<uni-icons type="shop" size="18"></uni-icons>
			<!-- 描述文本 -->
			<text class="cart-title-text">购物车</text>
		</view>
		<!-- 商品列表区域 -->
		<!-- uni-swipe-action 是最外层包裹性质的容器 -->
		<uni-swipe-action >
			<block v-for="(goods, i) in cart" :key="i">
				<!-- uni-swipe-action-item 可以为其子节点提供滑动操作的效果。需要通过 options 属性来指定操作按钮的配置信息 -->
				<uni-swipe-action-item :options="options" @click="swipeActionClickHandler(goods)">
					<my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>
				</uni-swipe-action-item>
			</block>
		</uni-swipe-action>
		<my-settle></my-settle>
	</view>
	<view class="empty-cart" v-else>
	    <image src="/static/cart_empty@2x.png" class="empty-img"></image>
	    <text class="tip-text">空空如也~</text>
	</view>
</template>

<script>
// 导入自己封装的 mixin 模块
import badgeMix from '@/mixins/tabbar-badge.js';
// 按需导入 mapState 这个辅助函数
import { mapState, mapMutations } from 'vuex';
export default {
	mixins: [badgeMix],
	data() {
		return {
			options: [
				{
					text: '删除',
					// 显示的文本内容
					style: {
						backgroundColor: '#C00000'
						// 按钮的背景颜色
					}
				}
			]
		};
	},
	computed: {
		...mapState({
			cart: state => state.myCart.cart
		})
	},
	methods: {
		...mapMutations({
			updateGoodsState: 'myCart/updateGoodsState',
			updateGoodsCount: 'myCart/updateGoodsCount',
			removeGoodsById: 'myCart/removeGoodsById'
		}),
		radioChangeHandler(e) {
			console.log(e);
			this.updateGoodsState(e);
		},
		numberChangeHandler(e) {
			console.log(e);
			this.updateGoodsCount(e);
		},
		swipeActionClickHandler(goods) {
			console.log(goods);
			this.removeGoodsById(goods)
		}
		
	}
};
</script>

<style lang="scss">
.cart-title {
	height: 40px;
	display: flex;
	align-items: center;
	font-size: 14px;
	padding-left: 5px;
	border-bottom: 1px solid #efefef;
	.cart-title-text {
		margin-left: 10px;
	}
}
.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;

  .empty-img {
    width: 90px;
    height: 90px;
  }

  .tip-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
